Penetrator

The Penetrator fires beams of plasma that pierce through enemies and can hit up to 10 enemies in a line. It is incapable of pitching up or down, so it can not hit a Runner when it is on a flat, level surface. It is now available free for all players with the Still Alive update.

Use the Penetrator in long, straight lines, preferably with the enemies moving away, to maximize its damage. Because of its low height, combining it with a Holo tower is very effective. Since it shoots beyond its vision's range, it does not matter as much how far away the Penetrator is placed.